VS: Remove hack specific to VS 2019 Preview 2 and 3
This code was added because VS 2019 preview 2 stopped providing
Microsoft.VCToolsVersion.default.txt. MS plans to restore that file before the final VS 2019 release. Once that release is out we can drop the workaround.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information